Malicious PDF — malware analysis report

Static analysis result for SHA-256 96c2a7a64abb1bb3…

MALICIOUS

PDF

72.7 KB Created: 2021-03-04 12:09:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: fc7fc82b6dd7117a095a311f88c69efb SHA-1: acc68fade7a4f8935b1386aa0b12bcb40bb1c126 SHA-256: 96c2a7a64abb1bb334699c41838d1b21bc088bb7338c74422a44bb0999921d3d
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded URLs and is flagged by ML classifiers and ClamAV as malicious. The 'SE_INVOICE_LURE' heuristic suggests a phishing or scam attempt. The presence of multiple external URIs, including one on disposable hosting, indicates a likely attempt to redirect the user to a malicious site for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pelibifir.ru/aws?utm_term=como+hacer+una+minuta+de+reunion+ejemplo+en+word PDF link annotation
    • https://fakibugopozap.weebly.com/uploads/1/3/2/7/132712115/21d8e0dfe6b.pdfIn PDF document text
    • http://my-favshopc.online/bexapuronepatibejezujomponn6.pdfIn PDF document text
    • https://wadamosemexijep.weebly.com/uploads/1/3/4/4/134434227/4ce91c33.pdfIn PDF document text
    • https://nepubodi.weebly.com/uploads/1/3/4/6/134610278/zavigewunisi.pdfIn PDF document text
    • https://cdn.sqhk.co/nufesewepi/hhhdtig/daily_health_tips_app.pdfIn PDF document text
    • https://cdn.sqhk.co/vizefejij/jddifJJ/41504113600.pdfIn PDF document text
    • https://jososipiwudamuw.weebly.com/uploads/1/3/2/7/132740918/xotofijegajipo-wilerepavut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://toxiramagelovit.epizy.com/adobe_photoshop_cc_trial_direct.pdfIn PDF document text
    • http://topefanaxo.epizy.com/student_internship_contract_template.pdfIn PDF document text
    • http://motatowavem.epizy.com/chacha_bishna_video_djjohal.pdfIn PDF document text
    • http://debarunuzijabe.rf.gd/job_application_cover_letter_example.pdfIn PDF document text
    • http://sidijujaz.epizy.com/moxitogawa.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA9 5208 bytes
SHA-256: c8027839555f0e585a81adf404b8c0faabfda41259a88579580ececbebd7559e
font_01_sfnt_off0000ee42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE42 11604 bytes
SHA-256: 0283ccbe16bc5ff9dff0809f43d3666c5450308751049879013c23f5a144c6fe

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